| 904L Stainless Steel Coil Specification |
ASTM A240 / ASME SA240 |
| 904L Stainless Steel Coil Manufacturing Process |
Hot Rolled (HR) / Cold Rolled (CR) |
| 904L Stainless Steel Coil Grades |
201 / 304 / 304L/ 904L / 309S / 420 / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. |
| UNS No. - UNS S904L, UNS S31008, UNS S31600, UNS S31603, UNS S31603, UNS S31600, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS S8904 |
| EN No. 1.4845, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550, 1.4551, 1.4539 |
| 904L Stainless Steel Coil Thickness |
0.6 MM TO 16 MM THICKNESS |
| 904L Stainless Steel Coil Width |
1250 MM / 1500 MM / 2000 MM / 04 Feet / 05 Feet and Custom Cut Width as Per Requirement |
| 904L Stainless Steel Coil Length |
2400 MM / 2420 MM / 6000 MM / 08 Feet / 10 Feet / Coil Cut and Custom Cut Length as Per Requirement |
| 904L Stainless Steel Coil Surface Finish |
2B, 2D, BA, MATT, MATT PVC, No.4, No.5, SB, HR, No.8, Mirror, Hairline, Brush, Textured, Oil base wet Polished, Both sides Polished available. |
| 904L Stainless Steel Coil Coating |
PVC coating Normal / Laser, Film: 100 micrometer, Color: black/white. |
| 904L Stainless Steel Coil Other Testing |
NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, etc. |
| 904L Stainless Steel CoilValue Added Services |
Gas Cutting / CNC Plasma Cutting / Profiling / Rolling / Bending / Sheet Metal Fabrication / Drill / Punch / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| 904L Stainless Steel Coil Packaging |
Loose / Carrate / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps |
| 904L Stainless Steel Coil Shipment & Transportation |
By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| 904L Stainless Steel Coil Material Test Certificate |
Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC |
| Manufacturer |
POSCO, Aperam, Jindal Stainless, DKC Korea, Thyssenkrup, Baosteel, TISCO,Arcelor Mittal, VDM,Nippon Metal, Qingshan,Delong. |
| Shipping Port |
Shanghai/Ningbo port/Tianjin/Qindao |
Global Leader in Stainless Steel Coil Fabrication Services
Type 904L is a high alloy austenitic stainless steel renowned for its exceptional corrosion resistance. Known as UNS N08904, 904L is a super austenitic stainless steel that excels in various process settings with moderate to high corrosion resistance. Its high chromium and nickel content, combined with molybdenum and copper, guarantees superior to exceptional corrosion resistance. With its highly alloyed composition (25% nickel and 4.5% molybdenum), 904L surpasses 316L and 317L molybdenum-reinforced stainless steels in resisting chloride stress corrosion cracking, pitting, and general corrosion. Initially designed to endure dilute sulfuric acid conditions, 904L is also resilient against most organic and inorganic acids, including hot phosphoric acid. The 904L alloy is easily weldable and can be managed using standard shop fabrication methods.
Daxun Stainless Steel ensures full traceability for each stainless steel coil via the ERP system, covering type, specification, and origin, while advocating and promoting industry anti-counterfeiting measures. Leveraging advanced technology for processing and customization, Daxun sets the industry benchmark in precision and quality. In terms of service, Daxun promotes product life cycle management, offering expert material selection and processing solutions before sales, rigorous quality control during sales, and hassle-free service guarantees post-sale.
Quality, Delivery, Inspection
- Daxun conducts comprehensive quality assurance tests including flattening test, pitting and resistance test, mechanical test, hardness test, material positive identification, and expansion test to ensure the material's suitability for required applications.
- Throughout production, we meticulously measure the diameter, thickness, and surface of each product. Our standard delivery time ranges from 7-15 days. For special size products, delivery may extend to 20 days.
We strictly adhere to contractual delivery times.
- We support third-party customer agencies for factory inspections.
- We provide free samples to customers for testing.
- We offer support for on-site or video factory inspections.
Ordering Information
Purchase orders should specify quantity, grade, type or category, API5L reference, thickness, width, length, and any applicable attachments or additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating, or end finish. Contact Daxun now, and we will respond to your inquiry promptly.
Daxun's stainless steel business embarked its journey in 2003. Over two decades of dynamic growth have catapulted its stainless steel materials and processing services to the vanguard of China's industry.
For over 20 years, Daxun has excelled in international markets. In 2022, its export revenue surpassed US$100 million, positioning Daxun among the elite in China's stainless steel trade and processing sector. Our strategic expansion includes three export service bases within China and collaborations with engineering firms, steel mills, and global trading companies, continually enhancing our ability to serve international markets. This robust network underpins our commitment to global market expansion and service excellence.
Daxun International offers comprehensive stainless steel chain supermarket services, maintaining long-term partnerships with renowned steel mills globally. Our inventory includes 60,000 tons of standard stainless steel and 20,000 tons of specialized metals such as duplex steel, nickel-based alloys, and heat-resistant steel. We pride ourselves on providing stainless steel materials of the highest integrity, with strict adherence to varieties, specifications, and delivery weights.
Equipped with advanced steel processing technologies, Daxun boasts a professional physical and chemical testing center and an array of processing lines for cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying.
Our services span over 30 industries, including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. By partnering with steel mills and research institutions, we deliver integrated services from project design and material development to processing and manufacturing process optimization.
904L stainless steel belt: Chemical Composition
| Element |
% Present (in product form) |
| Carbon (C) |
0.02 |
| Silicon (Si) |
0.7 |
| Manganese (Mn) |
2 |
| Phosphorous (P) |
0.03 |
| Sulfur (S) |
0.01 |
| Chromium (Cr) |
19.00 - 21.00 |
| Nickel (Ni) |
24.00 - 26.00 |
| Nitrogen (N) |
0.15 |
| Molybdenum (Mo) |
4.00 - 5.00 |
| Copper (Cu) |
1.20 - 2.00 |
| Iron (Fe) |
Balance |
904L stainless steel belt: Mechanical Properties
| Yield Strength |
Ultimate Tensile |
Elongation |
Hardness |
| 0.2% Offset |
Strength |
in 2 in. |
| psi (min.) |
(MPa) |
psi (min.) |
(MPa) |
% (min.) |
(max.) |
| 31,000 |
220 |
71,000 |
490 |
36 |
70-90 Rockwell B |
904L stainless steel belt: Physical Properties
| Reference data on some physical properties |
| Density at 20°C kg/m3 |
8 |
| Thermal Conductivity W/m K at |
20°C |
12 |
| Modulus of Elasticity kN/mm2 at |
20°C |
195 |
| 200°C |
182 |
| 400°C |
166 |
| 500°C |
158 |
| Specific Thermal Capacity at 20°C J/kg K |
450 |
| Electrical Resistivity at 20°C mm2/m |
1 |
What are 904L's best qualities?
- This remarkable grade of stainless steel boasts an exceptionally low carbon content. Its elevated copper levels enhance resistance to potent acids such as sulphuric acid. The substantial nickel concentration imparts impressive resistance to stress corrosion cracking, making it a stellar choice for various challenging environments. Furthermore, its exceptional crevice corrosion and stress corrosion cracking resistance extends its applicability to demanding conditions like warm waters and chloride exposure. Whether in moderate or aggressive settings, 904L stainless steel shines in performance.
- 904L stainless steel is renowned for its extraordinary heat resistance, enduring temperatures up to 400 degrees Celsius. It is amenable to heat treatment at temperatures ranging from 1090 to 1175 degrees Celsius, followed by rapid cooling. This heat treatment technique is optimal for hardening 904L steel, ensuring it maintains its integrity under extreme conditions.
- Thanks to its unique composition, this type of steel remains nonmagnetic. It exhibits excellent weldability, formability, and toughness across a variety of applications, making it a versatile choice for numerous industries.
- 904L stainless steel offers unparalleled flexibility in welding, accommodating any standard method without the necessity for pre-heat or post-weld heat treatments.
What is 904L used for?
As previously mentioned, 904L stainless steel is prized in watchmaking for its high purity and low sulfur content. In industrial applications, its superior qualities make it indispensable in several areas:
- Seawater cooling devices, ensuring long-lasting performance in harsh marine environments.
- Wiring in electrostatic filtration devices, providing reliable corrosion resistance.
- Oil refinery components, standing up to severe operational conditions.
- Gas scrubbing plant parts, maintaining structural integrity under corrosive gas exposure.
- Machinery for pulp and paper processing, ensuring durability in demanding manufacturing processes.
- Components in sulfuric, acetic, and phosphoric acid processing plants, delivering superior acid resistance.
Fabrication Data
- Alloy 904L is effortlessly welded and processed using standard fabrication practices, making it a reliable choice for various industrial applications.
Cold Forming
- 904L stainless steel exhibits impressive ductility, making it easy to form. However, the addition of molybdenum and nitrogen necessitates more robust processing equipment compared to standard 304/304L grades.
Hot Forming
- Hot working procedures for 904L require maintaining temperatures between 1562 to 2102°F (850-1150°C). Typically, post-hot working involves solution annealing and quenching. If hot forming ceases above 2012°F (1100°C) and immediate quenching follows, the material may be used without further heat treatment. Proper quenching from temperatures above 2012°F (1100°C) is crucial. If partial heating or cooling falls below this threshold, or cooling is too slow, follow-up solution annealing and quenching are imperative. 904L should be solution annealed at 1940-2084°F (1060-1140°C).
Machining
- The cold work hardening rate of Alloy 904L poses more machining challenges compared to 410 and 304 stainless steels.
Welding
- Alloy 904L is compatible with most conventional welding methods. Its uniform austenitic structure and balanced alloying elements distribution make it ideal for welding. Elements such as molybdenum, chromium, and nickel redistribute during solidification post-welding. These segregations, although present, are less pronounced in 904L, mitigating potential corrosion issues. The alloy is typically welded using filler metal of identical composition but can also be welded without filler metal.
- The recommended welding consumables for 904L are 20 25 CuL covered electrode and 20 25 CuL wire, ensuring optimal welding performance and structural integrity.
In what diverse applications can the 904L stainless steel coils be utilized?
Thanks to its unparalleled corrosion resistance, our high-grade 904L stainless steel coils are remarkably versatile and are employed across a multitude of demanding applications.
- Petrochemical equipment, including reactors for optimal performance in harsh environments.
- Highly efficient heat exchangers, ensuring reliable thermal transfer.
- Advanced power plant flue gas desulfurization devices for cleaner emissions.
- Specialized organic acid treatment systems for industrial processes.
- Robust sea water heat exchangers, perfect for marine applications.
- Essential paper industry equipment, designed for durability and efficiency.
- Sophisticated pharmaceutical industry and chemical processing equipment, ensuring compliance and safety.
- Durable pressure vessels, engineered for high-stress applications.
- State-of-the-art food processing equipment, maintaining hygiene and safety standards.
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